1.thelibrarystaffworksveryhard.2.theschool‘steachingstaffareexcellent.3.howmanyareonthebankstaff?staff一词作为集体名词,其作---------时,谓语动词可用单数形式（如例句1）,也可用复数形式（如例句2）.

Question

1.the library staff works very hard.
2.the school‘s teaching staff are excellent.
3.how many are on the bank staff?
staff一词作为集体名词,其作---------时,谓语动词可用单数形式（如例句1）,也可用复数形式（如例句2）.
通过对例句3的观察可知,staff 可与------连用,表示“在工作人员中”.
改错：
there is no seat for you to sit.---------------

Answer 1

staff一词作为集体名词,其作整体时,谓语动词可用单数形式（如例句1）,也可用复数形式（如例句2,强调所有员工）.
通过对例句3的观察可知,staff 可与on连用,表示“在工作人员中”.
there is no seat for you to sit in.
因为,sit in the seat